Here are some things to try if you're having problems with Speech in your car:

Use a different kind of Bluetooth audio connection for speech. Have your phone use a different kind of Bluetooth audio connection. (You should only do this if you’re having problems with speech recognition in your car.)

On Start, swipe over to the All apps list, then select Settings > Devices > Bluetooth & other devices >your hands-free system> For all Bluetooth audio devices, use an alternate audio connection for Cortana and other speech check box. When this check box is selected and your phone is playing back audio, the car’s hands-free system will behave like it would during a phone call. Note that this setting will apply to all Bluetooth audio devices you have connected to your phone.

Check your cellular data or Wi‑Fi connection. Your phone needs to have a data connection to use Speech and search. For more info about getting connected and checking your data connection, see Cellular and SIM settings or Connect to Wi-Fi.

Make sure you’ve set up Cortana.

Make sure that the microphone for your car’s hands-free system isn’t blocked.

A Bluetooth device will show as Paired when the device has been paired with your phone but isn’t actually connected and in use at the current time. It will only show as Connected when the device is in range, turned on, and actually connected to your phone.

On Start, swipe over to the All apps list, then select Settings .

Select Devices > Bluetooth & other devices.

Select the Bluetooth device that’s paired but not working, then select Remove device.

If you're having trouble with the Bluetooth hands-free system in your car, here are a few things you might want to try to fix the problem or narrow things down:

Restart your phone. Press and hold the Power button and slide down on the screen when prompted, then turn on your phone again.

Delete the pairing between your Bluetooth device and phone, then pair again. Deleting the pairing and pairing again can sometimes help solve the problem. To delete your phone's pairing with the device, go to Settings, then select Devices > Bluetooth & other devices > select the Bluetooth device > Remove device. Make sure you also delete the pairing information on the hands-free system in your car. (See the documentation that came with your car or the device to learn how to do this.) After that, pair your phone with the Bluetooth device again.

Delete the list or lists of paired devices. If your problem continues, we recommend deleting the list of paired devices on your car’s hands-free system, and then starting over. Some car systems have multiples lists of paired devices, such as one list for hands-free calls and another one for playing music or other audio. Whether it’s one list or multiple ones, we recommend deleting the list or lists from the hands-free system in your car.

Check the documentation for your car's Bluetooth hands-free system. See the documentation that came with your car or with the Bluetooth hands-free system in it. Some cars require additional setup steps.

Start the pairing process from the hands-free system in your car. Most of the time, it’s best to start the pairing process from the hands-free system in your car, and then follow the instructions from there. If you start pairing from your phone and the car’s hands-free system at the same time, it can cause synchronization problems.

Here are a few things to check if you're having problems streaming music over Bluetooth in your car:

Check your data connection and date settings. For music that's protected with digital rights management (DRM), make sure that you have a working data connection and that the date and time are set correctly on your phone. For more info about getting a data connection, see Cellular and SIM settings or Connect to Wi-Fi.

Check the Bluetooth settings screen.Go to Settings > Devices > Bluetooth & other devices and make sure it says “Connected music” or something similar underneath the Bluetooth audio device. If it doesn’t, select the device, select Disconnect, and then select Connect to reconnect.

Check for supported Bluetooth profiles. Make sure the Bluetooth device or hands-free system in your car supports the same Bluetooth audio profile or profiles as your phone. To find out which Bluetooth profiles your car or device supports, check the documentation for it. After that, go to Supported Bluetooth profiles and compare it to the list of profiles that your phone supports.

Select the correct audio source in your vehicle’s audio system. Many times, the source will be something like "Bluetooth streaming audio." Check the manual for your car to get specific details and to learn how to select the correct audio source.

When you’re pairing a Bluetooth keyboard with your phone, you’ll often be prompted to enter a passcode on the keyboard itself to make sure you’re pairing with the correct device. When you’re done typing the passcode on the keyboard, make sure you press Enter on the keyboard.